Protective relay testing and characteristic analysis for high impedance faults in transmission lines

Author

Lee, J.B. ; Jung, Chul H. ; Kim, I.D. ; Baek, Y.K.

Author_Institution

Dept. of Electr. Eng., Wonkwang Univ., South Korea

Volume

2

fYear

1999

fDate

1999

Firstpage

1076

Abstract

This paper describes the relay testing method and the result for detecting availability of protective relays under high impedance faults (HIFs) in transmission lines. Mho type distance relays, quadrilateral type distance relays and PCM type current differential relays are selected for relay testing. Four kinds of model power systems including actual power systems to be used for relay testing are established in PSCAD/EMTDC. Each protective relay is tested using RTDS and RTPS. Boundaries of each operating zone are surveyed by testing. Availability of HIFs detection on relays are compared each other. Impedance variation characteristics at relay points are investigated using EMTDC in the case that source zero sequence impedance and load impedance are varied. The results shown in this paper can be used as an effective reference to install protective relay in real power system

Keywords

power system analysis computing; power system relaying; power transmission faults; power transmission lines; power transmission protection; relay protection; Mho type distance relays; PCM type current differential relays; PSCAD/EMTDC; availability; characteristic analysis; high-impedance faults; impedance variation characteristics; load impedance; power systems; power transmission lines; protective relay testing; quadrilateral type distance relays; source zero sequence impedance; Availability; EMTDC; Impedance; PSCAD; Power system faults; Power system modeling; Power system protection; Power system relaying; Protective relaying; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Society Summer Meeting, 1999. IEEE

Conference_Location

Edmonton, Alta.

Print_ISBN

0-7803-5569-5

Type

conf

DOI

10.1109/PESS.1999.787467

Filename

787467